I have had my Orbit 20 for about 7 months now. About 2 months ago, my tank started to build up brown algae on all sides of the tank, and I'm hoping you could point me in the direction of a solution.

The water levels all look good which is why I am at a loss. I am able to clean the main part of the tank with a brush and frequent water changes. This has lead to a significant slow down the growth, as in it now takes 4-5 days for it to start appearing again. However, the part of the tank with the pump, sponge and filter media has a lot of algae.